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| n | a(n) |
|---|---|
| 1 | 586508 |
| 2 | 1990286 |
| 3 | 7113819 |
| 4 | 28312934 |
| 5 | 71273789 |
| 6 | 205535751 |
| 7 | 540249256 |
| 8 | 1390563554 |
| 9 | 3531296333 |
| 10 | 9326702364 |
| 11 | 24557509678 |
| 12 | 66549724018 |
| 13 | 180324669249 |
| 14 | 491322127557 |
| 15 | 1337342513381 |
| 16 | 3651797621867 |
| 17 | 9962791056432 |
| 18 | 27218071969089 |
| 19 | 74337214580838 |
[586508,1990286,7113819,28312934,71273789, 205535751,540249256,1390563554,3531296333, 9326702364,24557509678,66549724018,180324669249, 491322127557,1337342513381,3651797621867, 9962791056432,27218071969089,74337214580838] |